26 lines
552 B
Go
26 lines
552 B
Go
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package nebula
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import (
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"bytes"
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"errors"
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"fmt"
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"github.com/jxskiss/base62"
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)
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func encodeWithPrefix(prefix []byte, b []byte) []byte {
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res := make([]byte, 0, len(prefix)+len(b)*4)
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res = append(res, prefix...)
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res = base62.EncodeToBuf(res, b)
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return res
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}
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func decodeWithPrefix(prefix []byte, b []byte) ([]byte, error) {
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if len(b) < len(prefix) {
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return nil, errors.New("input is too short")
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} else if !bytes.HasPrefix(b, prefix) {
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return nil, fmt.Errorf("missing expected prefix %q", prefix)
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}
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return base62.Decode(b[len(prefix):])
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}
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